#region Utf8Json License https://github.com/neuecc/Utf8Json/blob/master/LICENSE
// MIT License
//
// Copyright (c) 2017 Yoshifumi Kawai
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
#endregion

using System;
using System.Reflection;

namespace Elasticsearch.Net.Utf8Json
{
	internal interface IJsonFormatterResolver
    {
        IJsonFormatter<T> GetFormatter<T>();
    }

	internal static class JsonFormatterResolverExtensions
    {
        public static IJsonFormatter<T> GetFormatterWithVerify<T>(this IJsonFormatterResolver resolver)
        {
            IJsonFormatter<T> formatter;
            try
            {
                formatter = resolver.GetFormatter<T>();
            }
            catch (TypeInitializationException ex)
            {
                Exception inner = ex;
                while (inner.InnerException != null)
                {
                    inner = inner.InnerException;
                }

                throw inner;
            }

            if (formatter == null)
            {
                throw new FormatterNotRegisteredException(typeof(T).FullName + " is not registered in this resolver. resolver:" + resolver.GetType().Name);
            }

            return formatter;
        }

		private static readonly MethodInfo _getFormatterMethod = typeof(IJsonFormatterResolver).GetRuntimeMethod("GetFormatter", Type.EmptyTypes);
        public static object GetFormatterDynamic(this IJsonFormatterResolver resolver, Type type)
        {
            var formatter = _getFormatterMethod.MakeGenericMethod(type).Invoke(resolver, null);
            return formatter;
        }
    }

	internal class FormatterNotRegisteredException : Exception
    {
        public FormatterNotRegisteredException(string message) : base(message)
        {
        }
    }
}
